267 citations · 401 across the 9 of their papers we have counts for
9 papers
From CO- to HO-dominated atmospheres and back -- How mixed outgassing changes the volatile distribution in magma oceans around M dwarf stars
Ludmila Carone, Rory Barnes, Lena Noack +7
We investigate the impact of CO on TRAPPIST-1 e, f and g during the magma ocean stage. These potentially habitable rocky planets are currently the most accessible for astronomi…
The sulphur species in hot rocky exoplanet atmospheres
L. J. Janssen, P. Woitke, O. Herbort +4
The first JWST observations of hot Jupiters showed an unexpected detection of SO2 in their hydrogen-rich atmospheres. We investigate how much sulphur can be expected in the atmosph…
Clouds form on the hot Saturn JWST ERO target WASP-96b
Dominic Samra, Christiane Helling, Katy Chubb +3
WASP-96b is a hot Saturn exoplanet, with an equilibrium temperature well within the regime of thermodynamically expected extensive cloud formation. Prior observations with Hubble/W…
Exoplanet weather and climate regimes with clouds and thermal ionospheres: A model grid study in support of large-scale observational campaigns
Christiane Helling, Dominic Samra, David Lewis +7
With observational efforts moving from the discovery into the characterisation mode, systematic campaigns that cover large ranges of global stellar and planetary parameters will be…
Mineral Snowflakes on Exoplanets and Brown Dwarfs: Coagulation and Fragmentation of Cloud Particles with {\sc HyLandS}
Dominic Samra, Christiane Helling, Tilman Birnstiel
Brown dwarfs and exoplanets provide unique atmospheric regimes that hold information about their formation routes and evolutionary states. Modelling mineral cloud particle formatio…
The Atmospheres of Rocky Exoplanets II. Influence of surface composition on the diversity of cloud condensates
Oliver Herbort, Peter Woitke, Christiane Helling +1
Clouds are an integral part of planetary atmospheres, with most planets hosting clouds. The understanding of not only the formation, but also the composition of clouds is crucial t…
Understanding the atmospheric properties and chemical composition of the ultra-hot Jupiter HAT-P-7b: III. Changing ionisation and the emergence of an ionosphere
Ch. Helling, M. Worters, D. Samra +2
Ultra-hot Jupiters are the hottest close-in exoplanets discovered so far, and present a unique possibility to explore hot and cold chemistry on one object. The tidally locked ultra…
Dust in brown dwarfs and extra-solar planets VI. Assessing seed formation across the brown dwarf and exoplanet regimes
Elspeth K. H. Lee, Jasmina Blecic, Christiane Helling
The cloud formation process starts with the formation of seed particles, after which, surface chemical reactions grow or erode the cloud particles. We investigate which materials m…
Equilibrium chemistry down to 100 K - Impact of silicates and phyllosilicates on carbon/oxygen ratio
P. Woitke, Ch. Helling, G. H. Hunter +5
We introduce a fast and versatile computer code, GGchem, to determine the chemical composition of gases in thermo-chemical equilibrium down to 100 K, with or without equilibrium co…